"North Slope Pipeline Breaks, Spills During Pressure Testing"

"State environmental officials are investigating why a pipeline on Alaska's North Slope operated by BP ruptured early Saturday during a pressure test.

Workers in nearby buildings felt the ground shake from the force of the underground line break, Tom DeRuyter, on-scene coordinator for the state Department of Environmental Conservation, said Sunday.

BP Exploration (Alaska) Inc. estimated the size of the spill at 2,100 to 4,200 gallons of fluid, mainly methanol and other fluids along with an undetermined amount of crude oil. It spilled onto a gravel pad and into a small tundra pond, DEC said.